Title :
Reduction of power supply EMI emission by switching frequency modulation
Author :
Lin, F. ; Chen, D.Y.
Author_Institution :
Virginia Power Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
The measurement of electromagnetic interference (EMI) noise is reviewed, and noise sources of a power switching circuit are described. The effect of PWM frequency modulation on power supply EMI noise emission is investigated. Significant reduction of emission is possible with this scheme
Keywords :
PWM power convertors; electric noise measurement; electromagnetic interference; interference suppression; power supplies to apparatus; switching circuits; EMI emission reduction; EMI noise measurement; PWM frequency modulation; conducted EMI; power supply; power switching circuit; switching frequency modulation; Circuit noise; Electromagnetic interference; Electromagnetic measurements; Frequency modulation; Noise measurement; Power measurement; Power supplies; Pulse width modulation; Switching circuits; Switching frequency;
Conference_Titel :
Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-1243-0
DOI :
10.1109/PESC.1993.472080
